WO2024036222A1 - Indication d'association de ports de signal de référence de suivi de phase (ptrs) à des ports de signal de référence de démodulation (dmrs) - Google Patents

Indication d'association de ports de signal de référence de suivi de phase (ptrs) à des ports de signal de référence de démodulation (dmrs) Download PDF

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Publication number
WO2024036222A1
WO2024036222A1 PCT/US2023/071947 US2023071947W WO2024036222A1 WO 2024036222 A1 WO2024036222 A1 WO 2024036222A1 US 2023071947 W US2023071947 W US 2023071947W WO 2024036222 A1 WO2024036222 A1 WO 2024036222A1
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WIPO (PCT)
Prior art keywords
antenna
association
ptrs
architecture
ports
Prior art date
Application number
PCT/US2023/071947
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English (en)
Inventor
Haitong Sun
Sigen Ye
Chunxuan Ye
Huaning Niu
Seyed Ali Akbar Fakoorian
Hong He
Dawei Zhang
Wei Zeng
Oghenekome Oteri
Original Assignee
Apple Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US18/362,020 external-priority patent/US20240057116A1/en
Application filed by Apple Inc. filed Critical Apple Inc.
Publication of WO2024036222A1 publication Critical patent/WO2024036222A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
    • H04B7/0691—Hybrid systems, i.e. switching and simultaneous transmission using subgroups of transmit antennas
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0408—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas using two or more beams, i.e. beam diversity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0014—Three-dimensional division
    • H04L5/0023—Time-frequency-space
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal

Definitions

  • the described aspects generally relate to indicating an association between one or more phase tracking reference signal (PTRS) ports and one or more demodulation reference signals (DMRS) ports in a wireless communication system.
  • PTRS phase tracking reference signal
  • DMRS demodulation reference signals
  • a user equipment communicates with a base station, such as an evolved Node
  • a wireless communication system can include a fifth generation (5G) system, a New Radio (NR) system, a long term evolution (LTE) system, a combination thereof, or some other wireless systems.
  • 5G fifth generation
  • NR New Radio
  • LTE long term evolution
  • a wireless communication system can support a wide range of use cases such as enhanced mobile broad band (eMBB), massive machine type communications (mMTC), ultra-reliable and low-latency communications (URLLC), and enhanced vehicle to anything communications (eV2X).
  • eMBB enhanced mobile broad band
  • mMTC massive machine type communications
  • URLLC ultra-reliable and low-latency communications
  • eV2X enhanced vehicle to anything communications
  • Some aspects of this disclosure relate to apparatuses and methods for implementing techniques for a user equipment (UE) or a base station to support phase tracking reference signal (PTRS) using multiple uplink (UL) antenna elements of the UE.
  • the transmission of the PTRS may be based on an association between one or more PTRS ports and one or more demodulation reference signals (DMRS) ports for the UE having multiple UL antenna elements.
  • DMRS demodulation reference signals
  • the implemented techniques can be applicable to many wireless systems, e.g., a wireless communication system based on 3rd Generation Partnership Project (3GPP) release 15 (Rel-15), release 16 (Rel-16), release 17 (Rel-17), release 18 (Rel-18), or beyond.
  • 3GPP 3rd Generation Partnership Project
  • the UE may include a transceiver and a processor communicatively coupled to the transceiver.
  • the transceiver is configured to communicate with a base station.
  • the processor is configured to receive, from the base station, a downlink control information (DCI) including an association indication contained in an association field of the DCI to indicate an association between one or more phase tracking reference signal (PTRS) ports and one or more demodulation reference signals (DMRS) ports.
  • DCI downlink control information
  • PTRS phase tracking reference signal
  • DMRS demodulation reference signals
  • the association indication is contained in the association field of the DCI in a DCI format 0 1 or DCI format 0 2.
  • the association indication is for configuration of uplink (UL) transmissions using a number of UL antenna elements of the UE.
  • the association field may have a bit width determined based on an antenna architecture of the UE including the number of UL antenna elements, the number of UL antenna panels, the UL coherency.
  • the processor may be further configured to determine a DMRS port associated with a PTRS port based on the association indication contained in the association field and the antenna architecture.
  • the antenna architecture of the UE including the number of UL antenna elements may include a non-coherent antenna architecture, a fully coherent antenna architecture, or a partially coherent antenna architecture including multiple antenna panels.
  • the multiple antenna panels can be vertically stacked or horizontally stacked.
  • the partially coherent antenna architecture may include two antenna panels, each antenna panel including four antenna elements; or four antenna panels, each antenna panel including two antenna elements.
  • the bit width of the association field of the DCI may be higher than a number of bits for the association indication.
  • the base station is a first base station
  • the association indication is a first association indication for the first base station
  • the association field of the DCI may include a second association indication to indicate a second association between one or more PTRS ports and one or more DMRS ports for configuration of UL transmissions from the UE to a second base station.
  • the processor can be further configured to determine a Physical Uplink Shared Channel (PUSCH) antenna port associated with the PTRS port based on the antenna architecture of the UE; and transmit to the base station a PTRS through the PUSCH antenna port and the DMRS port associated with the PTRS port.
  • the PUSCH antenna port associated with the PTRS port can be determined based on a predetermined mapping.
  • the bit width of the association field of the DCI may be determined further based on a rank configuration of PUSCH and a coherency of the antenna architecture.
  • the antenna architecture of the UE may include a partially coherent antenna architecture having multiple antenna panels, and the bit width of the association field of the DCI includes at least 4 bits.
  • FIGS. 1A-1C illustrate an example wireless system supporting an association between phase tracking reference signal (PTRS) ports and demodulation reference signals (DMRS) ports in a wireless communication system, according to some aspects of the disclosure.
  • PTRS phase tracking reference signal
  • DMRS demodulation reference signals
  • FIG. 2 illustrates a block diagram of a UE implementing support for an association between PTRS ports and DMRS ports in a wireless communication system, according to some aspects of the disclosure.
  • FIG. 3 illustrates an example process performed by a UE supporting an association between PTRS ports and DMRS ports in a wireless communication system, according to some aspects of the disclosure.
  • FIG. 4 is an example computer system for implementing some aspects or portion(s) thereof of the disclosure provided herein.
  • a user equipment communicates with a base station, such as an evolved Node B (eNB), a next generation node B (gNB), or other base station.
  • a wireless communication system can include a fifth generation (5G) system, a New Radio (NR) system, a long term evolution (LTE) system, a combination thereof, or some other wireless systems.
  • 5G fifth generation
  • NR New Radio
  • LTE long term evolution
  • MIMO multiple input-multiple output
  • a UE can include an antenna array or system having a plurality of antenna panels, where an antenna panel can include an array of antenna elements that can be located in close physical location to each other.
  • an antenna can be a smart antenna system, where all antenna elements are considered as pseudo-omni or quasi-sector- omni antenna elements including a phase shifter.
  • a directional beam such as a transmission (Tx) beam or a receiving (Rx) beam, can be formed by adjusting the phase shifter of the antenna element.
  • PUSCH physical uplink shared channel
  • UL physical uplink
  • DMRS Demodulation reference signals
  • PTRS phase tracking reference signals
  • DMRS can be used for channel estimation as part of coherent demodulation of the PUSCH.
  • PTRS can be used to facilitate the receiver to estimate the phase noise for the PUSCH.
  • the phase noise of a transmitter increases as the frequency of operation increases, and the PTRS can be used to mitigate the phase noise at the receiver.
  • the PTRS plays an important role at mmWave frequencies to minimize the effect of the oscillator phase noise on system performance.
  • PTRS can enable suppression of phase noise and common phase error, especially at higher mmWave frequencies.
  • PTRS can be associated with a DMRS port during transmission, and can be further confined to the PUSCH transmission.
  • a PTRS antenna port for transmitting the PTRS can be associated with a DMRS antenna port, as indicated by an association between the PTRS antenna port and the DMRS antenna port.
  • a PTRS antenna port can be simplify referred to as PTRS port, and similarly, a DMRS antenna port can be referred to as a DMRS port. Accordingly, an association between a PTRS port and a DMRS port indicates that the associated DMRS port is also used for transmission of the PTRS.
  • PTRS can be configured with maximum 2 ports, and PTRS is associated with a DMRS port by an association indication received from the network or the base station.
  • the DMRS to PTRS port association can be indicated by a “PTRS- DMRS association” field in a downlink control information (DCI) having DCI format 0 1/0 2.
  • DCI downlink control information
  • the existing “PTRS-DMRS association” field can be either 0 or 2 bits.
  • antenna architectures may be implemented to include higher number of antenna elements and PTRS ports that exceed the current limited capabilities of association between a PTRS port and a DMRS port. Accordingly, an antenna architecture having higher number of antenna elements may require different phase noise handling and PTRS enhancement to fulfill system requirements.
  • Embodiments herein present such techniques for an association indication contained in an association field of the DCI to indicate an association between the PTRS ports and the DMRS ports.
  • the association field can have a bit width determined based on an antenna architecture of the UE.
  • a DMRS port associated with a PTRS port can be determined based on the association indication contained in the association field and the antenna architecture.
  • FIGS. 1A-1C illustrate an example wireless system 100 supporting an association between PTRS ports and DMRS ports in a wireless communication system, according to some aspects of the disclosure.
  • the wireless system 100 is provided for the purpose of illustration only and does not limit the disclosed aspects. As shown in FIG.
  • system 100 can include, but is not limited to, a network node (herein referred to as a base station) 101, another base station 103, and one or more UEs, such as a UE 102.
  • System 100 can further include additional components, not shown.
  • a base station such as base station 101 or base station 103, can include a node configured to operate based on a wide variety of wireless communication techniques such as, but not limited to, techniques based on 3rd Generation Partnership Project (3GPP) standards.
  • base station 101 can include a node configured to operate using Rel-16, Rel-17, or others.
  • the base station 101 can be a fixed station, and may also be called a base transceiver system (BTS), an access point (AP), a transmission/reception point (TRP), an evolved NodeB (eNB), a next generation node B (gNB), or some other equivalent terminology.
  • the system 100 can operate using both licensed cellular spectrum (known as in-band communication) and unlicensed spectrum (known as out-band communication).
  • UE 102 can be configured to operate based on a wide variety of wireless communication techniques. These techniques can include, but are not limited to, techniques based on 3 GPP standards. For example, UE 102 can be configured to operate using Rel-16, Rel-17 or later. UE 102 can include, but is not limited to, a wireless communication device, a smart phone, a laptop, a desktop, a tablet, a personal assistant, a monitor, a television, a wearable device, an Internet of Things (loTs), a vehicle’s communication device, a mobile station, a subscriber station, a remote terminal, a wireless terminal, a user device, or the like.
  • a wireless communication device a smart phone, a laptop, a desktop, a tablet, a personal assistant, a monitor, a television, a wearable device, an Internet of Things (loTs), a vehicle’s communication device, a mobile station, a subscriber station, a remote terminal, a wireless terminal, a user device,
  • UE 102 can include an antenna array or system 120 having a plurality of antenna panels.
  • an antenna system can include one or more antenna panels.
  • An antenna panel can include an array of antenna elements that can be located in close physical location to each other.
  • An antenna element can be an omnidirectional antenna element, a quasi-omnidirectional antenna element, a directional antenna element, or any other antenna element.
  • antenna can be a smart antenna system, where all antenna elements are considered as pseudo-omni or quasi-sector- omni antenna elements and include a phase shifter.
  • a directional beam such as a transmission (Tx) beam or a receiving (Rx) beam, can be formed by adjusting the phase shifter of one or more of the antenna elements.
  • antenna system 120 can provide corresponding antenna beam (herein “beam”) 122, beam 124, beam 126.
  • beam can include 2, 4, 8, 16, or other number of antenna elements, which can include a dipole antenna element, a monopole antenna element, a patch antenna element, a loop antenna element, a microstrip antenna element, or any other type of antenna elements suitable for transmission of RF signals.
  • Antenna system 120 can include a physical antenna array 130 having physical antenna ports 131 and multiple antenna elements, such as antenna element 133, which can form an antenna architecture 132.
  • antenna element 133 can form an antenna architecture 132.
  • FIG. 1C Antenna elements 133 can provide antenna beams, such as beam 122, beam 124, and beam 126 based on signal excitation through the antenna ports 131.
  • UE 102 can include beamforming component 135 and resource mapper 137.
  • UE 102 can include a group of multiple logic antenna ports 139, which may be simply refers to be “antenna ports” and stored in a memory of the UE, such as memory 201 in FIG. 2.
  • Each antenna port 134 can be related to a function performed by UE 102.
  • the term “antenna port” is a logical concept related to physical layer (LI), but is distinct from the physical RF antenna which is visible and tangible.
  • each individual downlink or uplink transmission can be carried out from a specific antenna port, the identity of which is known to the UE.
  • an antenna port can be represented as corresponding to a specific reference signal, such as a PTRS port or a DMRS port.
  • the reference signals can also be used by the UE to derive channel-state information related to the antenna port.
  • the set of antenna ports defined in 3 GPP specification 38.211 for 5GNR can be listed below:
  • PDSCH Downlink Shared Channel
  • PDCCH Control Channel
  • CSLRS Channel State Information: Antenna Port starting from 3000 (3000 Series); SS-Block/PBCH (Broadcast Channel): Antenna Port Starting from 4000 (4000 Series); PUSCH/DMRS (Uplink Shared Channel): Antenna Port Starting from 1000 (0 Series); SRS, precoded PUSCH: Antenna Port Starting from 1000 (1000 Series);
  • PUCCH Uplink Control Channel
  • PRACH Random Access
  • antenna port numbering such that the antenna ports used for different purposes can have numbers in different ranges.
  • downlink antenna ports starting with 1000 are used for PDSCH.
  • Different transmission layers for PDSCH can use antenna ports in this series, for example, 1000 and 1001 for a two-layer PDSCH transmission.
  • an “antenna port” can be a logical concept that is tied to particular function (e.g., PDSCH), but does not necessarily correspond to a specific physical antenna port, even though a physical antenna port is ultimately used signal transmission.
  • the mapping of antenna port 134 to physical antenna ports 131 can be controlled by beam forming component 135 as a given beam may need to transmit the signal on one or more particular antenna ports to form a desired beam.
  • the antenna architecture 132 of UE 102 can be a noncoherent antenna architecture, a fully coherent antenna architecture, or a partially coherent antenna architecture including multiple antenna panels.
  • UE 102 can include a fully coherent antenna architecture 140 having 8 antenna element 145 in one antenna panel 141 and 4 antenna groups 143, where an antenna group 143 can include two antenna elements 145.
  • Antenna panel 141 can be coherent within itself with one phase noise.
  • Antenna panel 141 can have the 4 antenna groups 143 vertically stacked.
  • antenna panel 142 can have the 4 antenna groups horizontally stacked.
  • the antenna architecture 140 shown for antenna panel 141 can be referred to as a “fully coherent architecture”.
  • the partially coherent antenna architecture can include two antenna panels, each antenna panel including four antenna elements.
  • a partially coherent antenna architecture 150 can include two antenna panels, antenna panel 151 and antenna panel 153, each antenna panel including four antenna elements.
  • Antenna panel 151 can be coherent within itself with one phase noise
  • antenna panel 153 can be coherent within itself with one phase noise.
  • antenna panel 151 and antenna 153 can be non-coherent with different phase noises.
  • antenna panel 151 and antenna 153 can be non-coherent with different phase noises.
  • antenna panel 151 and antenna 153 can be non-coherent with different phase noises.
  • Antenna architecture 150 can be referred to as a “partial coherent 2 architecture.”
  • the partially coherent antenna architecture 160 includes four antenna panels, each antenna panel including two antenna elements.
  • a partially coherent antenna architecture can include four antenna panels, antenna panel 161, antenna panel 163, antenna panel 165, and antenna panel 167, each antenna panel including two antenna elements.
  • Antenna panel 161 can be coherent within itself with one phase noise.
  • antenna panel 163, antenna panel 165, and antenna panel 167 can be coherent within their respective selves with one phase noise.
  • antenna panel 161, antenna panel 163, antenna panel 165, and antenna panel 167 can be non-coherent with different phase noises.
  • antenna panel 162, antenna panel 164, antenna panel 166, and antenna panel 168 can be horizontally stacked.
  • Antenna architecture 160 can be referred to as a “partial coherent 4 architecture.”
  • the various antenna architecture such as the antenna architecture 140 referred as a “fully coherent architecture”, the antenna architecture 150 as a “partial coherent 2 architecture,” the antenna architecture 160 as a “partial coherent 4 architecture,” are for example only, and are shown for only 8 Tx antenna elements, but the number of antenna elements is not meant to be limiting.
  • an antenna architecture that is a “fully coherent architecture”, a “partial coherent 2 architecture,” and a “partial coherent 4 architecture” can be similarly defined and will understood by those skilled in the art based on the discussion here. Accordingly, operations described herein for an antenna architecture that is a “fully coherent architecture”, a “partial coherent 2 architecture,” and a “partial coherent 4 architecture” can be similarly applicable as illustrated in the current disclosure.
  • UE 102 can include a transceiver 121 and a processor 123 communicatively coupled to transceiver 121.
  • Transceiver 121 can be configured to wirelessly communicate with base station 101 and base station 103.
  • processor 123 can be configured to perform various operations.
  • UE 102 can receive from base station 101, a downlink control information (DCI) 111 including an association indication 115 contained in an association field 113 of the DCI 111 to indicate an association between one or more PTRS ports and one or more DMRS ports.
  • the association indication 115 can be used for configuration of uplink (UL) transmissions using a number of UL antenna elements of UE 102.
  • DCI downlink control information
  • the association field 113 can have a bit width determined based on an antenna architecture of the UE including the number of UL antenna elements, with more details may be provided by the descriptions for FIG. 3.
  • the bit width (e.g. size) of the association field varies with differing antenna architecture to better provide efficient solutions considering the phase noises associated with the antenna architecture.
  • the bit width of the association field 113 of the DCI 111 can be greater than a number of bits for the association indication 115.
  • the association indication 115 can be a first association indication for base station 101
  • the association field 113 of the DCI 111 can include a second association indication to indicate a second association between one or more PTRS ports and one or more DMRS ports for configuration of UL transmissions from UE 102 to base station 103.
  • UE 102 can be implemented according to a block diagram as illustrated in FIG. 2.
  • UE 102 can have antenna system 120 including one or more antenna elements to form various beams, e.g., beam 122, beam 124, or beam 126, coupled to transceiver 121 and controlled by processor 123.
  • Transceiver 121 and antenna system 120 can be configured to enable wireless communication in a wireless network, such as wireless system 100, including wireless communication with base station 101.
  • transceiver 121 can include radio frequency (RF) circuitry 216, transmission circuitry 212, and reception circuitry 214 to enable wireless communication with other UEs and/or a base station as discussed for wireless system 100.
  • RF radio frequency
  • RF circuitry 216 can include multiple parallel RF chains for one or more of transmit or receive functions, each connected to one or more antenna elements of the antenna panel.
  • processor 123 can be communicatively coupled to a memory 201, which are further coupled to the transceiver 121.
  • Various data can be stored in memory 201.
  • memory 201 can store DCI 111 received from base station 101.
  • DCI 111 can include association field 113 containing association indication 115.
  • memory 201 can store instructions, that when executed by processor 123 perform or cause to perform operations described herein, e.g., operations to support an association between PTRS ports and DMRS ports in a wireless communication system.
  • processor 123 can be “hard-coded” to perform the operations described herein.
  • processor 123 can be configured to perform operations described for FIG. 3.
  • FIG. 3 illustrates an example process 300 performed by UE 102 supporting an association between PTRS ports and DMRS ports in a wireless communication system, according to some aspects of the disclosure.
  • Process 300 can be performed by UE 102, which may be implemented as shown in FIG. 2.
  • Process 300 may also be performed by a computer system 400 of FIG. 4.
  • Process 300 is not limited to the specific aspects depicted in those figures and other systems may be used to perform the method as will be understood by those skilled in the art. It is to be appreciated that not all operations may be needed, and the operations may not be performed in the same order as shown in process 300.
  • processor 123 of UE 102 can receive, from base station 101, a DCI including an association indication contained in an association field of the DCI to indicate an association between one or more PTRS ports and one or more DMRS ports.
  • the association indication is for configuration of UL transmissions using a number of UL antenna elements of the UE.
  • the association field has a bit width determined based on an antenna architecture of the UE including the number of UL antenna elements.
  • processor 123 can receive DCI 111 including association indication 115 contained in association field 113 of DCI 111 to indicate an association between one or more PTRS ports and one or more DMRS ports.
  • the association indication 115 is for configuration of UL transmissions using a number of UL antenna elements of UE 102.
  • the association field 113 can have a bit width determined based on an antenna architecture of UE 102 including the number of UL antenna elements.
  • base station 101 when base station 101 configures an 8 Tx UL operation, more than 2 bit can be configured for the “PTRS-DMRS association” field in DCI format 0 1 and DCI format 0 2 for the association field 113.
  • the association field 113 can be referred to as the “PTRS-DMRS association” field.
  • the association field 113 can have 4 bits configured as the “PTRS-DMRS association” field.
  • Base station 101 can configure the 8 Tx operation by either configuring a Sounding Reference Signal (SRS) resource set with usage of a codebook having 8 ports SRS resource, or configuring SRS resource set with usage of a nonCodebook with 8 SRS resources each with single port in the set.
  • SRS Sounding Reference Signal
  • the bit width of the association field 113 of DCI 111 can be determined further based on a rank configuration of PUSCH and a coherency of the antenna architecture.
  • the bit width of the “PTRS-DMRS association” field in DCI format 0 1 and DCI format 0 2 for the association field 113 can be determined based on the maxRank configuration in PUSCH-Config.
  • maxRank 1
  • the “PTRS-DMRS association” field can be 0 bit.
  • the “PTRS-DMRS association” field can be 2 or 4 bits.
  • the “PTRS-DMRS association” field can be 4 bits.
  • the bit width of the “PTRS-DMRS association” field in DCI format 0 1 and DCI format 0 2 can be determined based on the coherency of the antenna architecture.
  • the “PTRS-DMRS association” field can include 2 or 3 bits.
  • the “PTRS- DMRS association” field can include 4 bits.
  • the “PTRS-DMRS association” field can include 4 bits.
  • the “PTRS-DMRS association” field can include 4 bits.
  • the “PTRS-DMRS association” field can include 4 bits.
  • the “PTRS-DMRS association” field can include 4 bits.
  • Table 1 lists some bit widths of the “PTRS-DMRS association” field in DCI format 0 1 and DCI format 0 2 depending on the rank, e.g., maxRank and coherency of the antenna architecture.
  • processor 123 of UE 102 can determine a DMRS port associated with a PTRS port based on the association indication contained in the association field and the antenna architecture.
  • base station 101 can configure the “PTRS-DMRS association” field in DCI format 0 1 and DCI format 0 2 in various options for the 8Tx UL operation.
  • each code word can contain at most 4 layers (DMRS ports). 2 bits can be used to associate the PTRS port with one of the 4 DMRS ports (layers).
  • the CW with the largest transport block (TB) (MCS) can be selected as the DMRS port associated with a PTRS port.
  • UE 102 can select either the first or the second CW and its DMRS port as the DMRS port associated with a PTRS port. Additionally and alternatively, the DMRS port with a smaller or larger index can be selected as the DMRS port associated with a PTRS port.
  • the “PTRS-DMRS association” field can indicate the association between a PTRS port with one of the 8 DMRS ports (layers).
  • the “PTRS-DMRS association” field contains more bits, e.g., 4 bits, the extra most significant bits (MSB) can be ignored.
  • the “PTRS- DMRS association” field contains more bits, e.g., 4 bits, the extra MSB can be used for the second TRP, i.e., the second SRS-ResourceSet.
  • TRP transmission/reception point
  • the following Table 2 can be used to select the DMRS port associated with a PTRS port.
  • additional “PTRS-DMRS association” fields can be configured for the second TRP by the second SRS-ResourceSet.
  • a partial coherent 4 architecture such as the antenna architecture 160
  • a 4 bit ⁇ b3, b2, bl, b0] is used for the “PTRS-DMRS association” field
  • the following Table 3 can be used to select the DMRS port associated with a PTRS port.
  • an additional “PTRS-DMRS association” field can be configured for the second TRP, such as the second SRS- ResourceSet.
  • the “PTRS-DMRS association ” field in DCI format 0 1 and DCI format 0 2 design option can either follow the same design as partial coherent 4 architecture shown for the antenna architecture 160, or partial coherent 2 architecture shown as the antenna architecture 150.
  • processor 123 of UE 102 can determine a PUSCH antenna port associated with the PTRS port based on the antenna architecture of the UE.
  • the mapping between the PUSCH antenna port and the PTRS port can be hardcoded in the specification. Additionally and alternatively, the mapping between the PUSCH antenna port and the PTRS port can be configured by base station 101, e.g., via RRC or MAC-CE. In some embodiments, the PUSCH shares the same antenna port as SRS.
  • the mapping between the PUSCH antenna port and the PTRS port can be configured either following the same mapping as the partial coherent 4 architecture shown for the antenna architecture 160, or partial coherent 2 architecture shown for the antenna architecture 150.
  • the mapping between a PUSCH antenna port and a PTRS port is hardcoded in the specification, for a partial coherent 2 architecture shown as the antenna architecture 150, the following Table 4 can be an example.
  • mapping between a PUSCH antenna port and a PTRS port is hardcoded in the specification
  • a partial coherent 4 architecture shown as the antenna architecture 160 if the mapping between the PUSCH antenna port and the PTRS port is hardcoded in the specification, the following are two examples. Table 5
  • processor 123 of UE 102 can transmit to the base station a PTRS through the PUSCH antenna port and the DMRS port associated with the PTRS port.
  • Computer system 400 can be any computer capable of performing the functions described herein such as UE 102 or base station 101 in FIG. 1, for operations described for processor 123 or process 300.
  • Computer system 400 includes one or more processors (also called central processing units, or CPUs), such as a processor 404.
  • Processor 404 is connected to a communication infrastructure 406 (e.g., a bus).
  • Computer system 400 also includes user input/output device(s) 403, such as monitors, keyboards, pointing devices, etc., that communicate with communication infrastructure 406 through user input/output interface(s) 402.
  • Computer system 400 also includes a main or primary memory 408, such as random access memory (RAM).
  • Main memory 408 may include one or more levels of cache.
  • Main memory 408 has stored therein control logic (e.g., computer software) and/or data.
  • Computer system 400 may also include one or more secondary storage devices or memory 410.
  • Secondary memory 410 may include, for example, a hard disk drive 412 and/or a removable storage device or drive 414.
  • Removable storage drive 414 may be a floppy disk drive, a magnetic tape drive, a compact disk drive, an optical storage device, tape backup device, and/or any other storage device/drive.
  • Removable storage drive 414 may interact with a removable storage unit 418.
  • Removable storage unit 418 includes a computer usable or readable storage device having stored thereon computer software (control logic) and/or data.
  • Removable storage unit 418 may be a floppy disk, magnetic tape, compact disk, DVD, optical storage disk, and/ any other computer data storage device.
  • Removable storage drive 414 reads from and/or writes to removable storage unit 418 in a well-known manner.
  • secondary memory 410 may include other means, instrumentalities or other approaches for allowing computer programs and/or other instructions and/or data to be accessed by computer system 400.
  • Such means, instrumentalities or other approaches may include, for example, a removable storage unit 422 and an interface 420.
  • the removable storage unit 422 and the interface 420 may include a program cartridge and cartridge interface (such as that found in video game devices), a removable memory chip (such as an EPROM or PROM) and associated socket, a memory stick and USB port, a memory card and associated memory card slot, and/or any other removable storage unit and associated interface.
  • main memory 408, the removable storage unit 418, the removable storage unit 422 can store instructions that, when executed by processor 404, cause processor 404 to perform operations for a UE, UE 102 or base station 101 in in FIG. 1, for operations described for processor 123 or process 300.
  • Computer system 400 may further include a communication or network interface 424.
  • Communication interface 424 enables computer system 400 to communicate and interact with any combination of remote devices, remote networks, remote entities, etc. (individually and collectively referenced by reference number 428).
  • communication interface 424 may allow computer system 400 to communicate with remote devices 428 over communications path 426, which may be wired and/or wireless, and which may include any combination of LANs, WANs, the Internet, etc. Control logic and/or data may be transmitted to and from computer system 400 via communication path 426.
  • a tangible, non-transitory apparatus or article of manufacture includes a tangible, non-transitory computer useable or readable medium having control logic (software) stored thereon is also referred to herein as a computer program product or program storage device.
  • control logic software stored thereon
  • control logic when executed by one or more data processing devices (such as computer system 400), causes such data processing devices to operate as described herein.
  • At least one of the components set forth in one or more of the preceding figures may be configured to perform one or more operations, techniques, processes, and/or methods as set forth in the example section below.
  • circuitry associated with a UE, base station, network element, etc. as described above in connection with one or more of the preceding figures may be configured to operate in accordance with one or more of the examples set forth below in the example section.
  • the present disclosure contemplates that the entities responsible for the collection, analysis, disclosure, transfer, storage, or other use of such personal information data will comply with well-established privacy policies and/or privacy practices.
  • such entities should implement and consistently use privacy policies and practices that are generally recognized as meeting or exceeding industry or governmental requirements for maintaining personal information data private and secure.
  • Such policies should be easily accessible by users, and should be updated as the collection and/or use of data changes.
  • Personal information from users should be collected for legitimate and reasonable uses of the entity and not shared or sold outside of those legitimate uses. Further, such collection/sharing should only occur after receiving the informed consent of the users.
  • policies and practices should be adapted for the particular types of personal information data being collected and/or accessed and adapted to applicable laws and standards, including jurisdiction-specific considerations. For instance, in the US, collection of, or access to, certain health data may be governed by federal and/or state laws, such as the Health Insurance Portability and Accountability Act (HIPAA); whereas health data in other countries may be subject to other regulations and policies and should be handled accordingly. Hence different privacy practices should be maintained for different personal data types in each country.
  • HIPAA Health Insurance Portability and Accountability Act

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Certains aspects de la présente divulgation concernent des appareils et des procédés pour prendre en charge la transmission de signaux de référence de suivi de phase (PTRS) sur la base d'une association entre un ou plusieurs ports PTRS et un ou plusieurs ports de signaux de référence de démodulation (DMRS) pour un équipement utilisateur (UE) ayant de multiples éléments d'antenne de liaison montante (UL). L'UE peut recevoir des informations de commande de liaison descendante (DCI) comprenant une indication d'association contenue dans un champ d'association des DCI pour indiquer une association entre un ou plusieurs ports PTRS et un ou plusieurs ports DMRS. Le champ d'association peut avoir une largeur de bit déterminée sur la base d'une architecture d'antenne de l'UE comprenant le nombre d'éléments d'antenne UL. L'UE peut en outre déterminer un port DMRS associé à un port PTRS sur la base de l'indication d'association contenue dans le champ d'association et l'architecture d'antenne.
PCT/US2023/071947 2022-08-10 2023-08-09 Indication d'association de ports de signal de référence de suivi de phase (ptrs) à des ports de signal de référence de démodulation (dmrs) WO2024036222A1 (fr)

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US202263396781P 2022-08-10 2022-08-10
US63/396,781 2022-08-10
US18/362,020 2023-07-31
US18/362,020 US20240057116A1 (en) 2022-08-10 2023-07-31 Indication of phase tracking reference signal (ptrs) ports association with demodulation reference signal (dmrs) ports

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022082351A1 (fr) * 2020-10-19 2022-04-28 Apple Inc. Transmission de signal de référence de suivi de phase pour l'amélioration de la fiabilité de canal partagé de liaison montante physique
WO2022104687A1 (fr) * 2020-11-20 2022-05-27 Zte Corporation Systèmes et procédés pour l'indication d'une association signal de référence de suivi de phase-signal de référence de démodulation

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022082351A1 (fr) * 2020-10-19 2022-04-28 Apple Inc. Transmission de signal de référence de suivi de phase pour l'amélioration de la fiabilité de canal partagé de liaison montante physique
WO2022104687A1 (fr) * 2020-11-20 2022-05-27 Zte Corporation Systèmes et procédés pour l'indication d'une association signal de référence de suivi de phase-signal de référence de démodulation

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Title
ERICSSON: "Feature lead summary 3 of PT-RS", vol. RAN WG1, no. Athens, Greece; 20180226 - 20180230, 1 March 2018 (2018-03-01), pages 1 - 12, XP051398617, Retrieved from the Internet <URL:http://www.3gpp.org/ftp/tsg%5Fran/WG1%5FRL1/TSGR1%5F92/Docs/> [retrieved on 20180301] *

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